Apparatus for mixing and containing liquids.



P. PURDY. APPARATUS FOR MIXING AND CONTAINING LIQUIDS.

APPLIOATION FILED NOV. 22, 1909.

972,243. Patented Oct. 1 1,191 o.

- W IHI 6119619, J2 Me)? for," ,Z7 363 676 357757 UNITED STATES PATENTOFFICE.

FREDERICK PURDY, OF KENOSI-IA, WISCONSIN, ASSIGNOR TO THOMAS B. JEFFERY,OF KENOSI-IA, WISCONSIN; KATE E. JEFFERY, CHARLES T. JEFFERY, AND HAROLDW. JEFFERY EXECUTORS 0F SAID THOMAS B. JEFFERY, DECEASED.

APPARATUS FOR MIXING AND CONTAINING LIQUIDS.

Specification of Letters Patent.

Patented Oct. 11, 1910.

To all whom "it may concern:

, Be it known that I, FREDERICK PURDY, a citizen of the United States,residing at Kenosha, county of Kenosha, State of Wisconsin, haveinvented a certain new and useful Improvement in Apparatus for Mixingand Containing Liquids, and declare the following to be a full, clear,and exact description of the same, such as will enable others skilled inthe art to which it pertains to make and use the same, reference beinghad to the accompanying drawings, which form a part of thisspecification.

My invention has for its object to provide a simple and novel apparatuswhereby two liquids may be automatically mixed in predeterminedproportions regardless of the quantity in which one of said liquids issupplied.

A further object of my invention is to provide means whereby it isimpossible to supply one of the liquids unless the conditions are suchthat the other liquid will be caused to be introduced automatically.

The various features of novelty whereby my invention is characterizedwill hereinafter be pointed out with particularity in the claims; but,for a full understanding of my invention and of its object andadvantages, reference may be had to the following detailed descriptiontaken in connection with the accompanying drawing wherein:

Figure 1 is a sectional view showing a fragment of one form of apparatusembodying my invention, the condition being that wherein one of theliquids has been supplied and prior to the introduction of the otherliquid, the section being on line l-1 of Fig. 4; Fig. 2 is a viewsimilar to Fig. 1, showing the condition after the second liquid hasbeen introduced; Fig. 3 is a view similar to Figs. 1 and 2, showing thecondition after a portion of the mixture has been withdrawn; Fig. A is aview partly in elevation and partly in section, showing a fragment ofthe apparatus, the section being taken on line 4t4 of Fig. 1; Figs. 5and 6 are sec tions taken on line 55 of Fig. 4:, showing differentpositions of the controlling shaft.

In my application, Serial No. 529,258, filed on even date herewith, Ihave disclosed a novel form of apparatus for automatically mixingtogether two liquids in predetermined proportions; the invention beingparticularly applicable to mixing a lubricating oil with a liquid fuel,such as gasolene, without being limited to these particular liquids. Thepresent invention relates to the same art and particularly to means forpreventing one of the liquids from being supplied when the conditionsare not such that a proper mixture may be obtained.

Referring to the drawing, A represents a reservoir for containing one ofthe liquids, to which I shall hereafter refer as gasolene and B is anauxiliary reservoir for containing the other liquid, to which I shallhereafter refer as lubricating oil.

G is a closed chamber which opens into the main reservoir at the bottomthereof through an opening 0.

The auxiliary reservoir is made up of two compartments, an outercompartment Z2 and an inner compartment 6 which communicate at theirlower ends through an opening Z1 The compartment b of the auxiliaryreservoir is closed at the top and communicates with the chamber througha conduit D which opens at its ends into the tops of this compartment ofthe auxiliary reservoir and the closed chamber. The closed chamher is soproportioned that its cubic contents are equal to the volume oflubricating oil which it is desired to mix with a quantity of gasolenewhich will fill the main reservoir. The compartments 6 and b are shownas being approximately equal in size although, in some aspects of myinvention, this is not material. The compartment 6 of the reservoir isclosed at the top and ex tends somewhat above the top of the othercompartment so as to provide a free space above the oil level in thecompartment 12 when both compartments are filled.

E is an overflow pipe which extends from the upper end of thecompartment 72 of the auxiliary reservoir into the main reservoir.

F is an inlet pipe from which oil may be supplied to the auxiliaryreservoir.

As in my aforesaid application, the auxiliary reservoir is first filledwith oil and then the gasolene is poured into the main reservoir througha suitable port G. When the pouring of the gasolene begins the conditionis that illustrated in Fig. 1. As soon as there is an appreciablequantity of gasolene in the main reservoir some of the gasolene entersthe closed chamber through the opening a and thereafter, as the liquidlevel rises in the main reservoir, that in the closed chamber follows,but more slowly, forcing the air out of the top of the chamber into thetop of the compartment 7) of the'auxiliary reservoir. The downwardpressure upon the lubricating oil in the outer compartment of theauxiliary reservoir causes some of the lubricatin oil to flow into theinner compartment an thence through the overflow into the mainreservoir. This process continues progressively as the main reservoir isbeing filled until finally a condition is reached wherein the mainreservoir is full and the compartment 12 of the auxiliary reservoir hasbeen emptied to a point in proximity to the opening 6 as indicated inFig. 2. Thereafter, as the mixture is withdrawn from the main reservoir,reducing the head of the gasolene, the oil in the inner compartment ofthe auxiliary reservoir begins to flow back into the outer compartment.Fig. 3 illustrates the condition after approximately half of the mixturehas been withdrawn from the main reservoir. As the withdrawing processcontinues, the

- oil level in the outer compartment will rise until the oil level inthe two compartments is the same. If, after the main reservoir has beenpartially or wholly emptied, it is desired to pour additional gasoleneinto the main reservoir, then, if for any reason there has not been anaddition to the supply of oil in the auxiliary reservoir, no more oilcan be transferred from the auxiliary reservoir into the main reservoirand the liquid in the main reservoir will not consist of the desiredproportions of oil and gasolene. This failure in the oil supply may bedue either to the fact that the auxiliary reservoir is intended to carrythe entire supply, or because of emptiness of the oil tank which is tofurnish oil to the auxiliary reservoir. For the sake of simplicityI haveillustrated only an arrangement wherein the auxiliary reservoir isintended to carry the whole supply of oil, although it will be evidentthat the supply in the auxiliary reservoir may fail even where means areprovided for furnishing oil to the auxiliary reservoir. 7

In accordance with one feature of my invention, where the condition ofthe oil in the auxiliary reservoir is such that a transfer of therequisite amount of oil to the main reservoir cannot take place upon theintroduction of gasolene into the main reservoir,

I provide means which will give a positive indication to the user sothat he will not carelessly fill his gasolene reservoir. In orderpositively to prevent gasolene from being poured into the main reservoirexcept under proper conditions, I prefer-to make the indicating meansserve'as a lock or closure which Wlll prevent access to the interior ofthemam reservoir until the proper condition in the oil reservoir isrestored. To this end I have provided in the inner compartment of theauxiliary reservoir a float I which is connected by a crank arm 2' to arevoluble shaft K. The shaft is extended to a point adjacent to theinlet port G and there has a portion thereof on one side cut away, as atis.

L is a cover for the port G, this cover being carried upon the end of acurved arm M which is pivotally mounted adjacent to its other end, as atm, on the upper Wall of the main reservoir. The inner end an), of thearm, extends into proximity to the reduced portion of the shaft K, theparts being so proportioned that the shaft in one position thereofserves as a stop which engages with the end m of the arm and preventsthe cover from being lifted, while in another position of the shaft thearm is left free so that it may be swung outwardly and cause the port tobe uncovered. If desired, a spring N may be provided for swinging thearm and raising the cover when free to do so. In this case, I prefer toprovide an additional cover 0 which may be in the form of a screw cap orthe like and which serves to lock the cover L in place and preventforeign matter, from entering the main reservoir at times when the coverL Would otherwise be open. The parts are so proportioned and arrangedthat the float brings the shaft into its unlocking position before theliquid level in the inner compartment of the auxiliary reservoir hasreached the overflow point. This condition of the parts is illustratedin Figs. 1, 2, 4t, and 5, the position which the parts L and M tend toassume as soon as the cover 0 is removed being indicated in dottedlines. As soon as the Withdrawal of the mixture from the main reservoirbegins, producing a fall in the oil level in the auxiliary reservoir,the float drops as indicated in Fig. 3 and rotates the shaft into itslocking position as indicated in Fig. 6. The portion m of the arm nowbears directly against the shaft and the arm is locked against movementso that if the user attempts to pour more gasolene into the mainreservoir, he is unable to do so; it being necessary first to fill theauxiliary reservoir with oil so as to raise the float and unlock theprotective cover.

While I have described in detail only a single preferred embodiment ofmy invention, I do not desire to be limited to the particular structuraldetails thus described, but intend to cover all forms and arrangementsof parts which fall within the terms employed in the definitions of myinvention constituting the appended claims.

What I claim is:

1. In an apparatus of the character described, a main reservoir, anauxiliary reservoir, said main reservoir having an inlet port, a devicecontrolling said port, means associated with said reservoir for causingliquid in the auxiliary reservoir to be transferred automatically andprogressively into the main reservoir when liquid is poured into themain reservoir, and means governed by the level of the liquid in theauxiliary reservoir for controlling said device.

2. In an apparatus of the character described, a main reservoir, anauxiliary reservoir, means associated with said reservoirs forautomatically and progressively transferring liquid from the auxiliaryreservoir to the main reservoir as liquid is poured into the mainreservoir and means associated with said auxiliary reservoir forindicating the condition of the liquid in the auxiliary reservoir.

3. In an apparatus of the character described, a main reservoir, anauxiliary reservoir, there being an inlet port in the main reservoir anda discharge outlet from the auxiliary reservoir to the main reservoir, adevice for closing said port, and means governed by the liquid level inthe auxihary reservoir for controlling said device.

4:. In an apparatus of the character described, a main reservoir, anauxiliary reservoir, there being an inlet port in the main reservoir,means associated with said reservoirs for causing liquid to betransferred automatically and progressively from the auxiliary reservoirto the main reservoir during the filling of the main reservoir, saidmeans being so proportioned and arranged that the transfer of liquidwill take place only when the volume of the liquid in the auxiliaryreservoir bears a predetermined relation to the empty space in the mainreservoir, and means associated with the auxiliary reservoir forindicating whether or not said predetermined relation exists.

5. In an apparatus of the character del i l scribed, a main reservoir,an auxiliary reservoir, there being an inlet port in the main reservoir,means associated with said reservoirs for causing liquid to betransferred automatically and progressively from the auxiliary reservoirto the main reservoir during the filling of the main reservoir, saidmeans being so )roportioned and arranged that the trans er of liquidwill take place only when the volume of the liquid in the auxiliaryreservoir bears a predetermined relation to the empty space in the mainreservoir, and means associated with said auxiliary reservoir formaintaining said port closed at times when said predetermined relationdoes not exist between the volume of the liquid in the auxiliaryreservoir and the empty space in the main reservoir.

6. In an apparatus of the character described, a main reservoir, anauxiliary reservoir, said auxiliary reservoir comprising twocompartments communicating with each other at their lower ends, thefirst of said compartments being closed at the top and the second ofsaid compartments communicating at its upper end with the mainreservoir, said main reservoir having an inlet port, means associatedwith said reservoirs for producing a gradually increasing downwardpressure upon the surface of liquid contained in the said firstcompartment during the filling of the main reservoir, a float in saidsecond'compartment, and means associated with said float for maintainingsaid port closed when the liquid level in said second compartment fallsbelow a predetermined point.

In testimony whereof, I sign this specification in the presence of twowitnesses.

FREDERICK PURDY.

Witnesses:

WM. F. FRENDENREIOH, BRIOEUS SWEET.

